Indeed you have a great point here, as I can simplify, you do not own your data, you buy allocation of certain service, like you said about Amazon ebooks.
Indeed I'm a guy who balances more between freedom instead of making it rigidly by laws, however the "Tech World" really needs "foundational directives" where all companies should abide.
Like John Locke defines, as I remember, that you have a "natural right" to Life.
Why not make an analogy here...
Right to Life - Your data is yours.
Right to Liberty - Your data goes where you want.
Right to Property - help me here lol
Idk we really should start to think more about privacy to all people, and where the top ones do with them.